Q How can I make sure my new battery works well?
I am looking at getting a new battery and am considering a ‘dry maintenance-free’ one – is there anything special to be aware of when it is delivered? John Eden, County Durham
Answered by Shaun Lock, Bridge Motorcycles Those batteries are also known as Absorbed Glass Mat batteries and it’s really important that they are commissioned properly. If you don’t follow the procedure exactly and precisely, chances are your expensive new battery will only last three to four months.
They are shipped dry and then primed by high-gravity acid that comes in a separate pack. You can’t just squeeze that stuff into the case, you have to leave it in place for at least 30 minutes to allow the canister to drain completely. Once empty you now need to leave it for another 30 minutes to be absorbed by the special plates and separators, then charge it for a minimum of two hours before fitting it to your bike.